查询词典 information retrieval

Industry public figure points out, product of this kind of traditional search still has Huang Ye particular market, rely on telegraphic operation business to there is definite advantage in respect of industrial and commercial Information Retrieval especially, have at the same time save a gender to transmit a gender by force, actively to wait for a characteristic apparently, deep ploughing of this locality of base oneself upon will occupy position on fractionize market.

业界人士指出，黄页这类传统搜索产品仍具有一定市场，尤其是依靠电信运营商在工商信息检索方面有一定优势，同时具备保存性强、主动传播性明显等特点，立足本地深耕将在细分市场上占有一席之地。【以下内容为IT者网站提供英文翻译，未经授权请勿转载

The three classic models in information retrieval are called Boolean, vector, and probabilistic.

信息检索的三个经典模型分别是：布尔模型、向量模型和概率模型。

This passage analyzes the advantage and disadvantage of the Boolean Model and the Vector Space Model in information retrieval model: the Boolean Model is simple to realize, but its classification ability is limited and the logic expression formula is strict.

本文分析了信息检索中传统文档特征表示的布尔逻辑模型和向量空间模型的优缺点：布尔逻辑模型虽机制简单、容易实现，但是它的分类能力有限且逻辑表达式过于严格；向量空间模型将文档映射到连续域向量空间，为进一步的权重计算等多元处理提供了基础，但容易忽略文档集合中各个文档的一些共有特征。

Based on the theory of Boolean model, this article designed and realized an Information Retrieval system.

在布尔模型的理论基础上设计并实现了一个信息检索系统，本文对系统的概要设计、详细设计步骤都做出详细地介绍，并且对系统的主要代码进行了说明。

Finally, there has been a lot of research on information retrieval systems, especially on well controlled collections.

最后，出现了大量的研究资料检索系统，尤其是在很好的控制集合。

An ontology defines a common vocabulary for researchers who need to share information in a domain,which shares the same function of the traditional thesauri in information retrieval.

Ontology为需要共享某一领域信息的研究人员提供了通用的词表，而这正是传统的叙词表在信息检索中所起的作用。

The ability of facilitating users to achieve useful information is more and more important for information retrieval systems.

随着Internet上的信息量急剧增加，如何使用户获得有用的信息已成为信息检索系统急需解决的问题。

The third part introduced the main technology that is needed in the design and implementation of the PIS system, which includes web database technology, intelligent information retrieval techniques and information push technology.

第三部分：介绍了实现网络个性化信息服务系统所需要的主要技术，包括web数据库技术、智能检索技术和信息推送技术。

Information retrieval is such a kind of technology of retrieving what people need from the massive information resources.

信息检索就是从庞大的信息资源中找到人们所需信息的技术。

Developing grade Management System cannot only ruduce thep resure of the staff and system atically manage the service and information,but also decrease the use of lab our force,accelerate there quiring speed,improve management,speed the pace of concernad nationa l department automated information retrieval to standardize the managements.

开发本系统可使学院教职员工减轻工作压力，比较系统地对教务、教学上的各项服务和信息进行管理，同时，可以减少劳动力的使用，加快查询速度、加强管理，以及国家各部门关于信息化的步伐，使各项管理更加规范化。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。